Marmessoidea alata, Ho, 2018

Ho, Wai-Chun George, 2018, New taxa of Necrosciinae from Vietnam (Phasmatodea: Diapheromeridae), Zoological Systematics 43 (2), pp. 178-189 : 185-186

Marmessoidea alata elongata subsp. nov. ( Fig 32 )

Diagnosis. This new subspecies is similar to the nominate M. alata alata sp. nov. & subsp. nov., but can be separated by grassy green colouration, much slender and elongate body, weakly convex occiput of head, more elongate mesonotum and shorter wings.

Description. Male. Body slender. General colour of body and legs grassy green. Head lacking granulation, oval, as long as pronotum. Vertex and occiput weakly convex, with distinct median longitudinal furrow, posterior margin with indistinct swellings. Compound eyes big and rounded, about 2 times as long as genae. Antennae very long and filiform, longer than body length, covered with dense short bristles; scapus flattened basally, about 2 times as long as pedicellus, shorter than third segment. Thorax inconspicuously and sparsely covered with small granules. Pronotum rectangular, longer than wide, anterior margin curved inwards, posterior margins rounded, longitudinal and transverse sulci crossing before middle area. Mesonotum longer than combined length of pronotum, metanotum and median segment, broadly emarginated post-medially, with median longitudinal line. Abdomen smooth. Eighth tergum as long as ninth tergum. Anal segment shorter than ninth tergum, with a small emargination on posterior margin. Poculum tapering posteriorly, posterior margin pointed and reaching posterior margin of anal segment. Cerci cylindrical, apices obtuse and gently curved inwards. Legs unarmed, slender and long, with short bristles. All femora roughly as long as corresponding tibiae. Profemora incurved basally. Tegmina oval, with a yellow spot near lateromedial area. Alae well-developed, posterior apices reaching fifth abdominal tergum.

Female. Unknown.

Measurements. Length. Body, ♂ 70.0 mm; antennae, ♂ 92.0 mm; head, ♂ 4.0 mm; pronotum, ♂ 4.0 mm; mesonotum, ♂ 14.0 mm; metanotum (including median segment), ♂ 9.5 mm; profemora, ♂ 23.5 mm; mesofemora, ♂ 15.5 mm; metafemora, ♂ 21.5mm; protibiae, ♂ 22.0 mm; mesotibiae, ♂ 15.0 mm; metatibiae, ♂ 23.5mm; tegmina, ♂ 5.0 mm; alae, ♂ 32.0 mm.

Material examined. Holotype ♂, Vietnam, Thua Thien Hue , Bachma Mountain, 19 September 2016, He Li ( HKES).

Distribution. Vietnam.

Remarks. Further material collected from the type locality is necessary to confirm its relationship with the nominate M. alata alata sp. nov. & subsp. nov.

Etymology. The specific epithet of this new subspecies is derived from the elongate mesonotum while compared to the nominate race.

Figures

Figures 30–35. Necrosciinae spp., habitus. 30–31. Marmessoidea alata alata sp. nov. & subsp. nov. 32. M. alata elongata subsp. nov. 33. M. liuxingyuei sp. nov. 34–35. Neooxyartes zomproi gen. nov. & sp. nov. 30, 32–33, 35. Male. 31, 34. Female. Scale bars= 5mm.